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City of CaseyPopulation forecast

Casey Growth Areas

Population and age structure

Between 2021 and 2036, the age structure forecasts for Casey Growth Areas indicate a 103.3% increase in females under working age, a 237.6% increase in females of retirement age, and a 135.9% increase in females of working age.

Knowledge of how the age structure of the population is changing is essential for planning age-based facilities and services, such as child care, recreation and aged care.

The forecast age groups of the City of Casey is a function of the current age of the population (people aging each year, being born and dying) as well as the age of people migrating into and out of the area. This in turn is driven by location (fringe, city centre, regional or rural) the existing housing stock (separate dwellings, medium or high density), the amount and type of new residential development (same as existing stock, or diversifying) and where the area is in a cycle of change. We call this the area’s residential role and function. You can learn more about this in the section household and suburb life cycles.

Forecast age structure - 5 year age groups
Casey Growth Areas - Total females202120362046Change between 2021 and 2046
Age group (years)Number%Number%Number%Number
0 to 45,04910.78,6257.89,0207.3+3,971
5 to 94,5309.68,8308.09,3847.6+4,854
10 to 143,1996.88,5237.79,1047.4+5,905
15 to 192,3865.17,5336.88,1986.7+5,812
20 to 242,9116.26,7026.17,1165.8+4,204
25 to 294,3869.37,8517.17,9356.5+3,549
30 to 345,64012.09,6908.89,9278.1+4,287
35 to 395,41011.510,1639.210,3658.4+4,955
40 to 443,3737.29,1078.39,2287.5+5,855
45 to 492,3855.17,7227.08,2766.7+5,891
50 to 541,8664.06,2755.77,4126.0+5,546
55 to 591,4703.14,6144.26,2725.1+4,802
60 to 641,2482.63,6463.35,1604.2+3,912
65 to 699982.13,0322.84,1063.3+3,108
70 to 748971.92,6372.43,5342.9+2,637
75 to 796001.32,2122.03,0712.5+2,471
80 to 843900.81,5861.42,4082.0+2,018
85 and over3550.81,4711.32,2601.8+1,905
Total persons47,091100.0110,219100.0122,776100.0+75,685
Source: Population and household forecasts, 2021 to 2046, prepared by .id (informed decisions), October 2023.

Key findings

In 2021, the dominant age structure for females in Casey Growth Areas was ages 30 to 34, which accounted for 12.0% of the total females.

The largest increase in females between 2021 and 2036 is forecast to be in ages 40 to 44, which is expected to increase by 5,734 and account for 8.3% of the total females.

The largest female 5 year age group in 2036 is 35 to 39 years, with a total of 10,163 females.

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